The trick with that was actually having everything drive at half speed.

这里的方法是，它们全都是以半速行驶。

Played at normal speed, the half speed recordings sound twice as fast.

在正常速度下播放，半速录音的速度是正常速度的两倍。

Even that close, they'd be going half the speed of light.

它速度应该有光速的一半。

Some of the tracks were recorded at normal speed and some were recorded at half speed.

有些歌曲是以正常速度记录的，有些歌曲是以半速记录的。

Click on it again, and see that you can change the speed to half the speed, 75% or x 1.25 %.

再点一下，看到可以把速度改成一半的速度、75%或者变快 1.25%。

And somehow, it can travel at half the speed of light.

不知何故，它可以以光速的一半传播。

I mean, we're already talking about a train going half the speed of light.

我的意思是，我们实际上是在谈论以一半光速行驶的火车。

The train is moving at half the speed of light. That's set.

火车以光速的一半行驶。这是指定的。

And if the train takes 577 nanoseconds to pass you while it's moving at half the speed of light, it must be 86.6 meters long!

如果火车以光速一半的速度行驶到你身边需要 577 纳秒，那么它必须长 86。6 米！

When it's neutron star-sized, the escape velocity is half the speed of light, but if it's more than 2.8 times the mass of the Sun, the core will keep collapsing.

当它是中子星大小时，逃逸速度就是光速的一半，但如果它的质量超过2.8倍太阳的质量，其核心就将继续坍塌。